Quasinormal Modes from Penrose Limits

Watch a General Relativity Seminar lecture from UC Santa Barbara's Kwinten Fransen exploring how Penrose limits can be used to describe quasinormal modes with large real frequencies. Learn about the fundamental aspects of Penrose limits and plane wave spacetimes before discovering how they connect to quasinormal modes. Delve into the geometric realization of emergent symmetry algebra underlying quasinormal modes in the large real frequency limit, with specific applications to Kerr black holes. Follow along as the lecture progresses through topics including harmonic oscillators, Ferminormal coordinates, shield examples, and numerical approaches, all based on research published in arXiv:2301.06999. Gain insights into boundary conditions, special aspects, generic curves, and understand the relative differences through numerical results presented during this advanced physics discussion.